All Activityhttp://forums.hybridz.org/discover/HybridZ - All ActivityenFuel pump cutting out at idleHello everyone. Not a huge issue here but just looking for some opinions.
When my car is warmed up and idleing it cuts power to the fuel pump randomly and speratically. Occationally causing it to stall. It is only for a split second however sometimes it happens a few times in a row.
If i rev it up by even 100 rpms it seems to go away.
Im thinking either circuit board problems, bad settings, or bad connectionsTue, 26 Sep 2017 19:52:39 +0000Clutch master cylinder pedal connectionThis picture is of a "late" clutch pedal - used in a 260Z and 280Z. The 240Z clutch pedal was different - made of thinner steel and curved along it's length to add strength. At some point (1973ish...) the brake booster was changed and a larger booster was used. The clutch master was moved farther away from the brake master due to the larger diameter of the new booster. The pedal box and clutch pedal changed also. Looks like you need an actual 240Z clutch pedal.Tue, 26 Sep 2017 19:50:39 +0000WTB: Forged Pistons 89mmJust like the title says, I'm looking to build an L28 and need some pistons. I am looking for forged because i would like to increase the revs a bit.
I would prefer flat tops with valve recesses. Let me know what you have.Tue, 26 Sep 2017 19:28:06 +0000Clutch master cylinder pedal connectionI don't remember running into any issues when I installed my pedal assembly/master cylinder but I have a 280z and it appears as though there are slight differences. If you look here, it looks like their pedal has a bracket welded to the pedal to correct the offset. http://www.jdmjunkies.ch/wordpress/2015-10-28/240z-pedal-box-throttle-pedal-assembly/ I noticed the same thing in a few other pictures.
And if you read this thread, it sounds like the same issue you have as a result of trying to use a 280z pedal in a 240z pedal box.Tue, 26 Sep 2017 19:12:17 +0000WTB 240Z LOWERING SPRINGS or COILOVERSIf you’re still looking, I have a set of used eibachs...$100+ shipping. I’m in ca, Bay Area. Part#’s 6305.202 and 6305.101Tue, 26 Sep 2017 18:58:16 +0000Clutch master cylinder pedal connectionTue, 26 Sep 2017 17:32:27 +0000Solid 260z rolling shell, perfect v8 carReduced to 2500Tue, 26 Sep 2017 16:53:02 +0000ford 8.8" solid axle swapFinally drove the car on sunday. Picked up a driveshaft from an explorer, shortened it and used a moog 290 u joint to install the chevy yoke. The rear calipers don't seem quite compatible with the stock master cylinder. Gonna need a bigger one. I plan on doing more test driving today.Tue, 26 Sep 2017 16:32:36 +0000cranks, but no start/ignition (video)It's easy to get misled on the injector connectors and voltage readings. When all six are connected, if you remove one measure voltage you'll see it on both pins. Because the injectors are on a parallel circuit. If all of the connectors are disconnected you'll only see it one side because the other 5 parallel circuits are broken. So it sounds like your injectors are getting proper power, which shows that the EFI relay is working correctly.
The injectors don't get a "signal" the other side of the connector just gets grounded, allowing current to flow, creating a solenoid magnet, and causing the injectors to open. The grounding is done by the transistors in the ECU.
The ECU "tracks" when to open the injectors by "counting" the sparks it sees on Pin #1 at the ECU connector. You want to be sure that Pin #1 is connected to the negative post of the coil. That's the signal that the ECU uses.
You started the thread with a weird power problem, now you're in to the EFI system. Sometimes when a bunch of weird things are happening you have to go to a firm starting point and just start measuring things until you find a number that's not right. Here's a link to a really good troubleshooting guide for the EFI systems. Find 1978's procedure and start measuring. Get real numbers, and write them down. some thing will show up.
The 1980 EFI Manual. It covers all years of EFI up to 1980. Yours in in there.
http://www.xenonzcar.com/s130/other.phpTue, 26 Sep 2017 16:17:40 +0000Hoke Performance LS2/T56 install starts today.....I can say from personal experience that the factory clutch master cylinder will _not_ work, at least not with the LS6 clutch and pressure plate package that I used from Tick performance. I went with a 7/8" MC and the pedal feel is outstanding. Also my primaries are 1-7/8", 3" collector which I immediately stepped down to 2.5" to clear the transmission crossmember and keep the exhaust somewhat up inside of the tranny tunnel.Tue, 26 Sep 2017 16:14:34 +0000Clutch master cylinder pedal connectionIf you look at the picture the clutch rod is 3/4" to the left of the clutch pedal. I will try and take a better picture.Tue, 26 Sep 2017 16:07:09 +0000cranks, but no start/ignition (video)Still chasing this, I'm narrowed it down to the injector isn't getting a signal. I have spark and fuel pressure, the injectors just isn't firing.
I'm getting 12v to one side of the injector connector ( the relay side) but not at the other side of the connector (which is the ecu side of the harness), I tried my ecu in an 77 I have here, that car run with my ecu. and vise versa
At this point I need to confirm the ecu is getting adequate voltage, which is gets from the coil, which has 12V. I'm running out of ideasTue, 26 Sep 2017 14:42:35 +000078 280Z LS3 ProjectThanks Richard,
I get a lot of inspiration from you guys. Looks like we will be starting the motor this weekend then I should be on the road by the end of October if everything works as expected.Tue, 26 Sep 2017 13:08:05 +000078 280Z LS3 ProjectYour attention to detail is great everything is done to such a high standard. Take pride in this, it is well deserved. Nice job. RTue, 26 Sep 2017 12:32:52 +0000Alternator wiring?Double check with LS1 tech. I used a Camaro alternator and did a resistor across the field wire and ran one wire to the battery. YOU NEED two cable one to the starter and one to the alternator. HTH, Richard.Tue, 26 Sep 2017 12:31:02 +0000Building an L28 (NA)Glad yo were able to solve your fuel issues. the engine sounds awesome but how does it feel? is it everything you had hoped?
Also 14 AFR at cruise seems fine to me why do you want to richen it up?Tue, 26 Sep 2017 11:38:39 +0000Holley Hi Ram Intake Manifold FitmentAny pictures of intake manifold, would love to do something like that with a direct port nitrous set up.Tue, 26 Sep 2017 11:27:38 +0000Rb25 gearbox fitment issues in 240z with ear style transmission tunnel mountsHey all,
Long time lurker, first-time poster. I am currently in the process of building an early 240z with a rb26 in it. I have just finished rebuilding my motor and mating it to the rb25 gearbox so I am in the process of getting it all mounted up in place. I am using the CXracing mount kit. I would have gone the McKinney kit but unfortunately here in Australia the dollar was low at the time of ordering so this was the only affordable one.
Anyway, I have got the engine mounted up and am having trouble getting the gearbox up in the tunnel as the speedo sensor is interfering with the ears. I'm not sure the best way to go about fixing this issue. I have seen plenty of pics of peoples mods of notching out the bracket with the other style of tunnel mounting but I can't see any solutions that utilise the cx mounts I have. Has anyone come across and solved this problem at all?
I have uploaded 2 pics of the interference, and also one of the mounts that I have that attaches between the ears. I have already tried just moving the engine forwards but the mounts are already set such that the engine is as far forward as possible.
Any help would be much appreciated!!Tue, 26 Sep 2017 11:15:39 +0000Has anyone done a mod like this for the rb25 speedo but with the other style of factory mount? Its not as simple as notching it for this as i need to retain the mounting hole. Any ideas?Tue, 26 Sep 2017 05:50:03 +0000Clutch master cylinder pedal connectionI'm having a hard time seeing any alignment/misalignment in the picture. The master cylinder should be directly inline with the pedal left/right, and should be pretty close to one of the holes in the pedal up/down. Here's a picture of the connection I lifted from atlanticzTue, 26 Sep 2017 05:01:20 +0000New topstage z kitHoly cow! That is gorgeous!Tue, 26 Sep 2017 04:39:57 +0000Clutch master cylinder pedal connectionI installed an after market Tilton clutch master cylinder, you can see in the picture the rod from the master cylinder does not line up with the clutch pedal. The rod is offset by about 3/4". The 240Z was missing the master cylinder, so I did not see how it was connected. How does the rod connect to the clutch pedal?Tue, 26 Sep 2017 04:23:32 +0000240Z LS3 TR6060 BuildJust curious, I don't see any mention of it, but to fit the tr6060, did you need to modify the tunnel at all? did the shifter line up okay? any clearance issues at all?Tue, 26 Sep 2017 01:39:32 +00001971 240z ProjectPicture size is fine. Better than having to click on each individual thumbnail.Tue, 26 Sep 2017 01:18:37 +0000Help me value 280z with L28ET swapThe little filler panel on the rear is only on 77-78 280Zs. It's spot welded on, and to remove it you (or body shop) will have to drill out the spot welds, smooth them out (be careful with the spot welder to make sure you don't end up with holes) and then you'll need to do a little painting. Not too big a deal, but not something you just unbolt and remove.
If you are after something that is stockish, but with some suspension work and some more power, then I think this car would fit the bill pretty well. Hope it works out.Tue, 26 Sep 2017 01:15:37 +0000